Home / 740,855.20-1,111,801.20-320,432.80

Finding the Fourth Proportional to 740,855.20, 1,111,801.20 and 320,432.80

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Solution

The fourth proportional to 740,855.20, 1,111,801.20 and 320,432.80 is: 480,873.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,855.20 : 1,111,801.20 = 320,432.80 : x
  2. Step 2: Convert to fraction form
    740,855.20/1,111,801.20 = 320,432.80/x
  3. Step 3: Cross multiply
    740,855.20x = 1,111,801.20 × 320,432.80
  4. Step 4: Simplify right side
    740,855.20x = 356,257,571,559.36
  5. Step 5: Solve for x
    x = 356,257,571,559.36/740,855.20
  6. Step 6: Final answer
    x = 480,873.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.